WorksheetsNetwork 7-8 module quizz
Total questions: 60
Worksheet time: 33mins
Which part of an Ethernet Frame uses a pad to increase the frame field to at least 64 bytes?
EtherType
Preamble
Start of Frame Delimiter
Data field
Which part of an Ethernet frame detects errors in the frame?
Preamble
Start of Frame Delimiter
Frame Check Sequence
Which part of an Ethernet Frame describes the higher- layer protocol that is encapsulated?
EtherType
Preamble
Start of Frame Delimiter
Frame Check Sequence
Which part of an Ethernet Frame notifies the receiver to get ready for a new frame?
Start of Frame Delimiter
Frame Check Sequence
Preamble
Data field
Which data link sublayer controls the network interface through software drivers?
MAC
LLC
Which data link sublayer works with the upper layers to add application information for delivery of data to higher level protocols?
MAC
LLC
What is a function of the MAC sublayer? (Choose three.)
controls access to the media
checks for errors in received bits
uses CSMA/CD or CSMA/CA to support Ethernet technology
communicates between software at the upper layers and the device hardware at the lower layers
allows multiple Layer 3 protocols to use the same network interface and media
When the switch forwards the frame, which statement(s) are true?
Switch adds the source MAC address which is currently not in the MAC address table
Frame is a broadcast frame and will be forwarded to all ports
Frame is a unicast frame and wilt be sent to specific port only
Frame is a unicast frame and will be flooded to all ports
Frame is a unicast frame but it will be dropped at the switch
What are two methods for switching data between ports on a switch? (Choose two.)
cut-off switching
cut-through switching
store-and-forward switching
store-and-supply switching
store-and-restore switching
Which switching method can be implemented using fast-forward switching or fragment-free switching?
cut-off switching
cut-through switching
store -and-forward switching
store-and-restore switching
Which two types of memory buffering techniques are used by switches?
(Choose two.)
long-term memory buffering
port-based memory buffering
shared memory buffering
short-term memory buffering
What feature automatically negotiates the best speed and duplex setting between interconnecting devices?
auto-MDIX
autobots
autonegotiation
autotune
Which two characteristics describe Ethernet technology? (Choose two.)
It uses a ring topology
It is supported by IEEE 802.3 standards
It uses unique MAC addresses to ensure that data is sent to the appropriate destination
It typically uses an average of 16 Mbps for data transfer rates
it is supported by IEEE 802.5 standards
What statement describes a characteristic of MAC addresses?
They have a 32-bit binary value
They are added as part of a Layer 3 PDU
They are only routable within the private network
They must be globally unique
What is the special value assigned to the first 24 bits of a multicast MAC address transporting an IPv4 packet?
01-00-5E
01-5E-00
FF-00-5E
FF-FF-FF
What will a host on an Ethernet network do if it receives a frame with a unicast destination MAC address that does not match its own MAC address?
It will forward the frame to the next host
It will discard the frame
It will strip off the datalink frame to check the destination IP address
It will remove the frame from the media
Which network device makes forwarding decisions based on the destination
MAC address that is contained in the frame?
router
hub
repeater
switch
Which network device has the primary function to send data to a specific destination based on the information found in the MAC address table?
switch
router
modem
hub
Which function or operation is performed by the LLC sublayer?
It adds a header and trailer to a packet to form an OSI Layer 2 PDU
It is responsible for media access control
It communicates with upper protocol layers
It performs data encapsulation
What happens to runt frames received by a Cisco Ethernet switch?
The frame is broadcast to all other devices on the same network
The frame is dropped
The frame is sent to the default gateway
The frame is returned to the originating network device
What addressing information is recorded by a switch to build its MAC address table?
the source Layer 2 address of incoming frames
the destination Layer 3 address of incoming packets
the destination Layer 2 address of outgoing frames
the source Layer 3 address of outgoing packets
What is auto-MDIX?
a type of Cisco switch
a feature that detects Ethernet cable type
an Ethernet connector type
a feature to automatically determine speed and duplex
a feature to automatically determine speed and duplex
What type of address is 01-00-5E-0A-00-02?
an address that reaches a specific group of hosts
an address that reaches one specific host
an address that reaches every host in the network
an address that reaches every host inside a local subnet
Which statement is true about MAC addresses?
A NIC only needs a MAC address if connected to a WAN
MAC addresses are implemented by software
The first three bytes are used by the vendor assigned OUI
The ISO is responsible for MAC addresses regulations
What are the two sizes (minimum and expected maximum) of an Ethernet frame? (Choose two.)
64 bytes
1024 bytes
1518 bytes
128 bytes
56 bytes
Which two functions or operations are performed by the MAC sublayer?
(Choose two.)
It handles communication between upper and lower layers
It adds a header and trailer to form an OSI Layer 2 PDU
It is responsible for Media Access Control
It adds control information to network protocol layer data
It performs the function of NIC driver software.
Which OSI layer sends segments to be encapsulated in an IPv4 or IPv6 packet?
data link layer
network layer
transport laver
session layer
Which layer is responsible for taking an IP packet and preparing it for transmission over the communications medium?
physical layer
network layer
data link layer
transport layer
What is the term for splitting up an IP packet when forwarding it from one medium to another medium with a smaller MTU?
encapsulation
fragmentation
segmentation
serialization
Which delivery method does not guarantee that the packet will be delivered fully without errors?
connectionless
best effort
media independent
What are the two most commonly referenced fields in an IPv4 packet header that indicate where the packet is coming from and where it is going? (Choose two.)
destination IP address
protocol
Time to Live
source IP address
Differentiated Services (DS)
Which statement is correct about IPv4 packet header fields?
The source and destination IPv4 addresses remain the same while travelling
from source to destination
The Time to Live field is used to determine the priority of each packet
The Total Length and Header Checksum fields are used to reorder a fragmented packet
The Version field identifies the next level protoco
Which field is used to detect corruption in the IPv4 header?
Header Checksum
Time to Live
Protocol
Differentiated Services (DS)
Which field includes common values such as ICMP (1), TCP (6), and UDP (17)?
Header Checksum
Time to Live
Protocol
Differentiated Services (DS)
Which three options are major issues associated with IPv4? (Choose three.)
IP address depletion
increased network complexity and Internet routing table expansion
Connessioni sempre attive
lack of end-to-end connectivity
global and political boundaries
too many IPv4 addresses available
Which two options are improvements provided by IPv6 as compared to IPv4?
(Choose two.)
header supports additional felds for complex packets
increased the IP address space
standardizes the use of NAT
supports class-based networks
uses a simpler header to provide improved packet handling
Which is true of the IPv6 header?
it consists of 20 octets
it consists of 40 octets
it contains 8 header fields
it contains 12 header fields
Which is true of the IPv6 packet header?
The Hop Limit field replaces the IPv4 Time to Live field
The Source and Destination IPv6 addresses change while travelling from
source to destination
The Time to Live field replaces the DiffServ field
The Version field identifies the next header
Which statement about host forwarding decisions is true?
A host cannot ping itself
A remote destination host is on the same local network as the sending host
Local hosts can reach each other without the need of a router
Routing is enabled on switches to discover the best path to a destination
Which default gateway statement is true?
A default gateway is required to send packets to other hosts on the local
network
The default gateway address is the IP address of a switch on a remote
network
The default gateway address is the IP address of the router on the local
network
Traffic can only be forwarded outside the local network if there is no default gateway
Which two commands could be entered on a Windows host to view its IPV4 and IPv6 routing table? (Choose two.)
netroute -I
netstat -r
print route
route print
print net
What is the command used on a Cisco IOS router to view the routing table?
netstart -r
route print
show ip route
show routing table
What does a code of "O" indicate next to a route in the routing table?
a directly connected route
a route with an administrative distance of 0
a gateway of last resort
a route learned dynamically from OSPF
This type of route is also known as a gateway of last resort.
static route
remote route
default route
directly connected route
Which is a characteristic of static routes?
They are manually configured.
They are advertised to directly connected neighbors.
They are appropriate when there are many redundant links.
They automatically adjust to a change in network topology.
True or False? A router can be configured with a combination of both static routes and a dynamic routing protocol.
true
false
Which command can be used on a Windows host to display the routing table?
tracert
netstat -r
show ip route
netstat-s
What information is added during encapsulation at OSI Layer 3?
source and destination MAC
source and destination IP address
source and destination application protocol
source and destination port number
How does the network layer use the MTU value?
The network layer depends on the data link layer to set the MTU, and adjusts the speed of transmission to accommodate it
The MTU is passed to the network layer by the data link layer
The network layer depends on the higher level layers to determine the MTU
To increase speed of delivery, the network layer ignores the MTU
Which characteristic describes an IPv6 enhancement over IPv4?
Both IPv4 and IPv6 support authentication, but only IPv6 supports privacy capabilities
The IPv6 address space is four times bigger than the IPv4 address space
IPv6 addresses are based on 128-bit flat addressing as opposed to IPV4 which is based on 32-bit hierarchical addressing
The IPv6 header is simpler than the IPvA header is, which improves packet
handling.
Which statement accurately describes a characteristic of IPv4?
IPvA has a 32-bit address space
AIl Pv4 addresses are assignable to hosts
An IPv4 header has fewer fields than an IPv6 header has
IPvA natively supports IPsec
When a router receives a packet, what information must be examined in order for the packet to be forwarded to a remote destination?
source MAC address
destination MAC address
source IP address
destination IP address
A computer has to send a packet to a destination host in the same LAN. How will the packet be sent?
The packet will be sent to the default gateway first, and then, depending on the response from the gateway, it may be sent to the destination host
The packet will first be sent to the default gateway, and then from the default gateway it will be sent directly to the destination host
The packet will be sent directly to the destination host
The packet will be sent only to the default gateway
Which IPv4 address can a host use to ping the loopback interface?
127.0.0.0
126.0.0.1
127.0.0.1
126.0.0.0
When a connectionless protocol is in use at a lower layer of the OSI model, how is missing data detected and retransmitted if necessary?
Network layer IP protocols manage the communication sessions if connection-oriented transport services are not available
Upper-layer connection-oriented protocols keep track of the data received and can request retransmission from the upper- level protocols on the sending host
The best-effort delivery process guarantees that all packets that are sent are received
Connectionless acknowledgements are used to request retransmission
What was the reason for the creation and implementation of IPv6?
to relieve IPv4 address depletion
to make reading a 32-bit address easier
to allow NAT support for private addressing
to provide more address space in the Internet Names Registry
Which information is used by routers to forward a data packet toward its destination?
destination data-link address
destination IP address
source IP address
source data-link address
Which field in an IPv4 packet header will typically stay the same during its transmission?
Flag
Packet Length
Time-to-Live
Destination Address
Which field in an IPv4 packet header will typically stay the same during its transmission?
Flag
Packet Length
Time-to-Live
Destination Address
Which field in an IPv6 packet is used by the router to determine if a packet has expired and should be dropped?
Address Unreachable
TTL
No Route to Destination
Hop Limit
